Ubuntu 20.04 Cisco Anyconnect

30-04-2021 admin

Cisco Anyconnect Ubuntu Install
Ubuntu 20.04 Cisco Anyconnect Download
Ubuntu Cisco Anyconnect Vpn
How To Install Cisco Anyconnect Ubuntu

Trying to SSH to a Cisco switch from Ubuntu 20.04 you may get this error. I’ve noticed the same thing from Redhat RHEL 8:

OpenConnect is an SSL VPN client initially created to support Cisco's AnyConnect SSL VPN. It has since been extended to support the Pulse Connect Secure VPN (formerly known as Juniper Network Connect or Junos Pulse) and the Palo Alto Networks GlobalProtect SSL VPN.

This error is because Ubuntu 20.04 has disabled the SHA1-based key exchange methods after some attacks have been found on SHA1.

In Unity install Cisco VPN ubuntu, setup Cisco VPN ubuntu, Ubuntu 13.04, Ubuntu 13.10 Popular Wine 6.0 Released, How to Install it in Ubuntu 20.04, 20.10 15 comments since January 16, 2021.
Mar 09, 2021 If you are using Ubuntu 20.04 (which has kernel version 5.4), you must use AnyConnect 4.8 (or later), or NVM installation fails. Local and Network Proxy Incompatibilities.

To work around this issue for Cisco switches you can use the command line argument -oKexAlgorithms=+diffie-hellman-group1-sha1 like this:

To save this for the specific IP permanently, add to your ssh_config file:

This will set that option permenantly for the specific host.

OpenConnect SSL VPN software was created to allow remote users and employees to securely connect to a Cisco, Juniper or Palo Alto SSL VPN gateway running in an enterprise environment from Linux systems..

OpenConnect is not officially supported by these network vendors (Cisco Systems, Juniper Networks, Pulse Secure, or Palo Alto Networks), However, if you’re using a Linux machine with no official or limited support, you should look at OpenConnect SSL VPN client instead to help you connect to your company’s VPN gateway…

Employees can use OpenConnect SSL VPN client to connect, and if authentication is approved, the connected users or employees are grant access to internal resources..

To learn how to install the official Cisco’s AnyConnect SSL VPN client, read this post..

This post shows you how to install OpenConnct SSL VPN client on Ubuntu 18.04 or 16.04 and connect to popular VPN server gateway…

When you’re ready to install OpenConnect, follow the steps below:

Step 1: Install OpenConnect

OpenConnect SSL VPN client is included with Ubuntu repositories by default… No additional software and configurations needed to get the package..

Simply use the commands below to install OpenConnect on Ubuntu machines..

Step 2: Connect to SSL VPN Servers

Once OpenConnect package has been successfully installed on Ubuntu, you should be ready to connect to SSL VPN servers, which can Cisco’s AnyConnect SSL VPN and Juniper Pulse Connect Secure…

Simply run the commands below to establish VPN connection to your VPN server gateway… In this example, our VPN gateway is vpn.example.com

sudo openconnect -u user --passwd-on-stdin vpn.example.com

Cisco Anyconnect Ubuntu Install

Replace vpn.example.com with the gateway of your SSL VPN gateway server name or IP… Press enter to initiate the connection… if the server is up, you should be prompted for a password to authenticate….

After a successful connection and authentication, you should see similar message as below: